МУИС, Химийн тэнхимЛугийн гол, Мушгиа худгийн газрын ховор элементийн хүдрийн химийн найрлага болон эрдсийн бүрэлдэхүүний харьцуулалтилтгэгч Б.Сүхбаатар2024-09-111- https://en.institut-seltene-erden.de/rare-earths-and-metals/rare-earth/2-Callura, Jonathan C., et al. "Selective adsorption of rare earth elements onto functionalized silica particles." Green Chemistry 20.7 (2018): 1515-1526.3-Zhang, Wencai, and Rick Q. Honaker. "Rare earth elements recovery using staged precipitation from a leachate generated from coarse coal refuse." International Journal of Coal Geology 195 (2018): 189-199. 4-Hassas, Behzad Vaziri, Mohammad Rezaee, and Sarma V. Pisupati. "Effect of various ligands on the selective precipitation of critical and rare earth elements from acid mine drainage." Chemosphere 280 (2021): 130684. Oxides MK LG Oxides MK LG Oxides MK LG % % % F 3.128 1.026 MnO 7.611 0.265 BaO 0.244 Na2O 0.36 8.932 Fe2O38.751 4.631 La2O30.954 MgO 1.721 0.201 ZnO 0.08 0.115 CeO21.353 0.043 Al2O34.341 12.848 Ga2O30.007 Pr2O30.234 SiO211.437 64.97 Rb2O 0.023 0.042 Nd2O30.894 0.063 P2O50.508 0.096 SrO 0.522 0.005 PbO 0.154 0.035 SO30.26 0.065 Y2O30.065 0.098 ThO20.039 0.018 K2O 2.56 3.009 ZrO21.357 Bi2O30.005 CaO 54.1 1.372 MoO30.021 HfO20.053 TiO20.64 0.591 Nb2O50.154Metal Elements MK LG Rare Earth Elements MK LG Content (mg/g) Content (mg/g) Ca 92.65 5.21 La 7.38 0.22 Zn 9.46 10.15 Ce 12.23 0.84 Mg 3.20 0.04 Pr 0.82 0.02 Pb 14.72 15.91 Nd 2.96 0.19 Cu 0.04 0.04 Sm 0.48 0.17 Ni 0.02 0.01 Eu 0.06 // Co 0.32 0.31 Gd 0.75 0.72 Ba 0.39 0.07 Tb 0.01 0.03 Fe 16.19 16.00 Dy 0.09 0.08 Mn 18.85 1.37 Ho / 0.01 Sr 1.66 0.02 Er / 0.08 Al 6.89 21.67 Tm 0.07 0.07 K 73.00 10.47 Yb 0.02 0.05 Ga 0.16 0.04 Lu 0.00 0.01 Rb 71.36 74.14 Y 0.23 0.47 Na 25.21 36.22 Sc 0.01 / Fig. 2. XRD pattern of REE ore samples in the two deposits (a) MK: Mushgai Khudag deposit, (b) LG: Lugiin Gol deposit. Fig. 4. The TIMA false-colored mineral phase map of the REE ore sample (A) MK and (B) LG.Fig. 5. The TIMA calculated the mass of mineral phases of the REE ore sample (A) MK and (B) LG.Fig. 6. The TIMA calculated the mineral association percentage of REE-bearing minerals in the studied REE ore deposits in Mongolia. (A) Bastnaesite and Parisite in the MK sample and (B) Bastnaesite and Cerium-Amphibole mixed oxide in the LG sample.Table 3 Mineral liberation classes by free surface of the REE ore in TIMA analysis of the Mushgai Khudag deposit. Liberation (%) 1 2 3 4 5 6 7 8 9 10 11 12 13 <10 21.41 9.37 19.54 1.01 12.62 31.34 42.27 14.10 6.12 0.00 24.86 2.18 1.23 ≥10<20 1.62 7.79 5.80 1.57 13.29 24.49 32.72 13.27 7.39 0.00 28.60 3.31 0.00 ≥20<30 4.98 6.88 4.98 2.40 13.83 11.07 8.58 18.30 11.19 0.00 27.98 3.38 0.00 ≥30<40 28.00 11.17 6.44 2.21 14.16 20.62 1.12 20.63 17.91 0.00 0.48 7.69 0.18 ≥40<50 12.06 3.96 7.42 2.11 14.39 0.38 0.21 9.57 7.23 0.00 5.20 6.98 0.00 ≥50<60 6.84 2.22 3.53 5.06 10.88 0.00 6.81 5.24 5.36 0.00 8.66 6.74 0.00 ≥60<70 0.71 5.68 0.27 14.00 4.26 0.00 0.13 2.38 9.45 0.00 0.05 9.86 17.32 ≥70<80 9.29 9.38 20.01 10.97 7.11 3.53 0.57 0.05 14.61 0.00 2.24 11.93 2.46 ≥80<90 13.51 13.67 6.72 8.86 1.80 4.59 5.17 0.13 11.29 0.00 0.31 27.03 0.01 ≥90 1.58 29.88 25.28 51.82 7.66 3.99 2.42 16.34 9.46 100.00 1.63 20.91 78.80 1-Quartz, 2-Dolomite, 3-Iron oxide, 4-Calcite, 5-Manganese oxide, 6-Bastnaesite, 7-Ferromanganese oxide, 8-Aluminosilicate, 9-Parisite, 10-Barite, 11-Apatite, 12-Orthoclase, 13-AlbiteTable 4 Mineral liberation classes by free surface of the REE ore in TIMA analysis of the Lugiin Gol deposit. Liberation (%) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 <10 45.28 20.28 5.01 5.04 14.68 0.85 7.82 9.42 18.96 2.32 9.99 42.42 45.38 36.67 38.24 ≥10<20 1.33 15.85 7.60 8.44 21.79 1.64 6.97 7.61 16.41 0.00 1.53 5.16 2.00 13.26 7.22 ≥20<30 0 23.75 10.18 8.71 23.13 2.83 8.10 7.19 5.21 16.33 5.18 27.75 36.99 16.94 21.35 ≥30<40 25.94 15.47 11.20 8.66 7.99 6.88 15.73 5.62 0.00 0.02 6.08 0.00 1.33 9.50 5.04 ≥40<50 0 4.96 7.15 8.45 5.80 10.99 16.17 8.68 20.37 10.87 1.73 0.00 5.06 5.50 0.04 ≥50<60 11.12 2.38 9.45 8.72 1.79 12.89 8.03 5.81 0.00 0.00 0.00 9.69 0.00 9.27 1.05 ≥60<70 0.08 1.27 8.59 7.18 1.94 16.17 2.40 2.89 7.20 0.00 0.80 0.00 3.16 0.81 8.31 ≥70<80 5.58 5.46 7.17 7.85 3.58 11.31 11.95 8.12 5.80 0.00 11.47 0.00 0.00 0.27 0.00 ≥80<90 0 5.82 7.57 21.65 0.17 13.27 10.52 7.64 4.18 25.26 1.88 12.60 5.93 1.39 8.78 ≥90 10.67 4.76 26.08 15.31 19.13 23.17 12.30 37.02 21.85 45.19 61.34 2.38 0.14 6.39 9.97 1-Bastnaesite, 2-Iron oxide (containing Mn), 3-Quartz, 4-Orthoclase, 5-Calcite, 6-Albite, 7-Catapleiite/Khibinskite, 8-Amphibole, 9-Niobium ore (Ce 5-10%), 10-Perovskite (Si/Fe/Al/Mn), 11-Zircon, 12-Andradite, 13-Rutile, 14-Aluminosilicate, 15-Cerium-Amphibole mixed oxidFig. 7. BSE images of the Mushgai Khudag (A) and Lugiin gol deposits (B). Fig. 8. BSE image results of REE-bearing minerals in the Mushgai Khudag deposit. Or: orthoclase, Par: parasite, Cal: calcite, Alu: aluminosilicate, Dol: dolomite Fig. 9. BSE image results of REE-bearing minerals in the Lugiin Gol deposit. Fig. 10. EDS pattern of the LG REE ore sample, (a) corresponded to point 1 in Fig. 9b; (b) corresponded to point 2 in Fig. 9bFig. 11. The binding and leaching characteristics of REE for REE ore samples from the Mushgai Khudag (A) and Lugiin Gol deposits (B). Fraction 1: Exchangeable and weak acid soluble; Fraction 2: Reducible; Fraction 3: Oxidizable; Fraction 4: Residual. Fig. 3. The particle size distribution of REE ore samples.
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